Rule 424(b)(3)
File No. 333-06127
MDU Resources Group, Inc.
Automatic Dividend Reinvestment
and Stock Purchase Plan
Supplement to Prospectus Dated August 1, 1996
MDU Resources Group, Inc. (Company) is expanding its Automatic Dividend
Reinvestment and Stock Purchase Plan (Plan) so that interested investors who are
legal residents in any of the 50 states may participate in the Plan. Effective
August 15, 1998, participation in the Plan is open to (i) any stockholder of
record of any class of the Company's capital stock, (ii) beneficial owners of
the Company's capital stock, as described in the Prospectus and (iii) any person
who is a legal resident in any of the 50 states who wants to become a
stockholder by making an initial cash payment at the time of enrollment of not
less than $50 but not more than $5,000.
To the extent required by applicable law in certain jurisdictions, shares
of common stock offered under the Plan to persons not presently stockholders of
the Company are offered only through Norwest Investment Services, Inc.
July 13, 1998
